3 # Part of a unified Makefile for building kernels. This part includes all
4 # the definitions that need to be after all the % directives except %RULES
5 # and ones that act like they are part of %RULES.
7 # Most make variables should not be defined in this file. Instead, they
8 # should be defined in the kern.pre.mk so that port makefiles can
9 # override or augment them.
11 # In case the config had a makeoptions DESTDIR...
13 MKMODULESENV+= DESTDIR="${DESTDIR}"
15 SYSDIR?= ${S:C;^[^/];${.CURDIR}/&;:tA}
16 MKMODULESENV+= KERNBUILDDIR="${.CURDIR}" SYSDIR="${SYSDIR}"
18 .if defined(CONF_CFLAGS)
19 MKMODULESENV+= CONF_CFLAGS="${CONF_CFLAGS}"
23 MKMODULESENV+= WITH_CTF="${WITH_CTF}"
26 .if defined(WITH_EXTRA_TCP_STACKS)
27 MKMODULESENV+= WITH_EXTRA_TCP_STACKS="${WITH_EXTRA_TCP_STACKS}"
30 # Allow overriding the kernel debug directory, so kernel and user debug may be
31 # installed in different directories. Setting it to "" restores the historical
32 # behavior of installing debug files in the kernel directory.
33 KERN_DEBUGDIR?= ${DEBUGDIR}
37 .for target in all clean cleandepend cleandir clobber depend install \
39 ${target}: kernel-${target}
40 .if !defined(MODULES_WITH_WORLD) && !defined(NO_MODULES) && exists($S/modules)
41 ${target}: modules-${target}
43 cd $S/modules; ${MKMODULESENV} ${MAKE} \
44 ${target:S/^reinstall$/install/:S/^clobber$/cleandir/}
48 # Handle ports (as defined by the user) that build kernel modules
49 .if !defined(NO_MODULES) && defined(PORTS_MODULES)
51 # The ports tree needs some environment variables defined to match the new kernel
53 # Ports search for some dependencies in PATH, so add the location of the installed files
54 LOCALBASE?= /usr/local
55 # SRC_BASE is how the ports tree refers to the location of the base source files
56 .if !defined(SRC_BASE)
57 SRC_BASE= ${SYSDIR:H:tA}
59 # OSVERSION is used by some ports to determine build options
60 .if !defined(OSRELDATE)
61 # Definition copied from src/Makefile.inc1
62 OSRELDATE!= awk '/^\#define[[:space:]]*__FreeBSD_version/ { print $$3 }' \
63 ${MAKEOBJDIRPREFIX}${SRC_BASE}/include/osreldate.h
65 # Keep the related ports builds in the obj directory so that they are only rebuilt once per kernel build
66 WRKDIRPREFIX?= ${MAKEOBJDIRPREFIX}${SRC_BASE}/sys/${KERNCONF}
68 PATH=${PATH}:${LOCALBASE}/bin:${LOCALBASE}/sbin \
69 SRC_BASE=${SRC_BASE} \
70 OSVERSION=${OSRELDATE} \
71 WRKDIRPREFIX=${WRKDIRPREFIX}
73 # The WRKDIR needs to be cleaned before building, and trying to change the target
74 # with a :C pattern below results in install -> instclean
76 .for __i in ${PORTS_MODULES}
77 @${ECHO} "===> Ports module ${__i} (all)"
78 cd $${PORTSDIR:-/usr/ports}/${__i}; ${PORTSMODULESENV} ${MAKE} -B clean all
81 .for __target in install reinstall clean
82 ${__target}: ports-${__target}
84 .for __i in ${PORTS_MODULES}
85 @${ECHO} "===> Ports module ${__i} (${__target})"
86 cd $${PORTSDIR:-/usr/ports}/${__i}; ${PORTSMODULESENV} ${MAKE} -B ${__target:C/install/deinstall reinstall/:C/reinstall/deinstall reinstall/}
91 .ORDER: kernel-install modules-install
94 kernel-all: beforebuild .WAIT ${KERNEL_KO} ${KERNEL_EXTRA}
96 kernel-cleandir: kernel-clean kernel-cleandepend
99 find . -maxdepth 1 ! -type d ! -name version -delete
103 .if !defined(MODULES_WITH_WORLD) && !defined(NO_MODULES) && exists($S/modules)
106 .if !defined(NO_MODULES_OBJ)
107 modules-all modules-depend: modules-obj
112 FULLKERNEL= ${KERNEL_KO}
114 FULLKERNEL= ${KERNEL_KO}.full
115 ${KERNEL_KO}: ${FULLKERNEL} ${KERNEL_KO}.debug
116 ${OBJCOPY} --strip-debug --add-gnu-debuglink=${KERNEL_KO}.debug \
117 ${FULLKERNEL} ${.TARGET}
118 ${KERNEL_KO}.debug: ${FULLKERNEL}
119 ${OBJCOPY} --only-keep-debug ${FULLKERNEL} ${.TARGET}
120 install.debug reinstall.debug: gdbinit
121 cd ${.CURDIR}; ${MAKE} ${.TARGET:R}
123 # Install gdbinit files for kernel debugging.
125 grep -v '# XXX' ${S}/../tools/debugscripts/dot.gdbinit | \
126 sed "s:MODPATH:${.OBJDIR}/modules:" > .gdbinit
127 cp ${S}/../tools/debugscripts/gdbinit.kernel ${.CURDIR}
128 .if exists(${S}/../tools/debugscripts/gdbinit.${MACHINE_CPUARCH})
129 cp ${S}/../tools/debugscripts/gdbinit.${MACHINE_CPUARCH} \
130 ${.CURDIR}/gdbinit.machine
134 ${FULLKERNEL}: ${SYSTEM_DEP} vers.o
136 @echo linking ${.TARGET}
138 .if !empty(MD_ROOT_SIZE_CONFIGURED) && defined(MFS_IMAGE)
139 @sh ${S}/tools/embed_mfs.sh ${.TARGET} ${MFS_IMAGE}
141 .if ${MK_CTF} != "no"
142 @echo ${CTFMERGE} ${CTFFLAGS} -o ${.TARGET} ...
143 @${CTFMERGE} ${CTFFLAGS} -o ${.TARGET} ${SYSTEM_OBJS} vers.o
146 ${OBJCOPY} --strip-debug ${.TARGET}
150 OBJS_DEPEND_GUESS+= assym.s vnode_if.h ${BEFORE_DEPEND:M*.h} \
151 ${MFILES:T:S/.m$/.h/}
152 LNFILES= ${CFILES:T:S/.c$/.ln/}
154 .for mfile in ${MFILES}
155 # XXX the low quality .m.o rules gnerated by config are normally used
156 # instead of the .m.c rules here.
157 ${mfile:T:S/.m$/.c/}: ${mfile}
158 ${AWK} -f $S/tools/makeobjops.awk ${mfile} -c
159 ${mfile:T:S/.m$/.h/}: ${mfile}
160 ${AWK} -f $S/tools/makeobjops.awk ${mfile} -h
164 rm -f *.o *.so *.So *.ko *.s eddep errs \
165 ${FULLKERNEL} ${KERNEL_KO} ${KERNEL_KO}.debug \
166 linterrs tags vers.c \
167 vnode_if.c vnode_if.h vnode_if_newproto.h vnode_if_typedef.h \
168 ${MFILES:T:S/.m$/.c/} ${MFILES:T:S/.m$/.h/} \
172 ${LINT} ${LINTKERNFLAGS} ${CFLAGS:M-[DILU]*} ${.ALLSRC} 2>&1 | \
175 # This is a hack. BFD "optimizes" away dynamic mode if there are no
176 # dynamic references. We could probably do a '-Bforcedynamic' mode like
177 # in the a.out ld. For now, this works.
178 HACK_EXTRA_FLAGS?= -shared
181 ${CC} ${HACK_EXTRA_FLAGS} -nostdlib hack.c -o hack.So
184 assym.s: $S/kern/genassym.sh genassym.o
185 NM='${NM}' NMFLAGS='${NMFLAGS}' sh $S/kern/genassym.sh genassym.o > ${.TARGET}
187 genassym.o: $S/$M/$M/genassym.c
188 ${CC} -c ${CFLAGS:N-fno-common} $S/$M/$M/genassym.c
190 ${SYSTEM_OBJS} genassym.o vers.o: opt_global.h
192 .if !empty(.MAKE.MODE:Unormal:Mmeta) && empty(.MAKE.MODE:Unormal:Mnofilemon)
195 # Skip reading .depend when not needed to speed up tree-walks
196 # and simple lookups.
197 # Also skip generating or including .depend.* files if in meta+filemon mode
198 # since it will track dependencies itself. OBJS_DEPEND_GUESS is still used.
199 .if !empty(.MAKEFLAGS:M-V${_V_READ_DEPEND}) || make(obj) || make(clean*) || \
200 make(install*) || make(kernel-obj) || make(kernel-clean*) || \
201 make(kernel-install*) || defined(_meta_filemon)
203 .MAKE.DEPENDFILE= /dev/null
206 kernel-depend: .depend
207 SRCS= assym.s vnode_if.h ${BEFORE_DEPEND} ${CFILES} \
208 ${SYSTEM_CFILES} ${GEN_CFILES} ${SFILES} \
209 ${MFILES:T:S/.m$/.h/}
210 DEPENDFILES= .depend .depend.*
211 DEPENDOBJS+= ${SYSTEM_OBJS} genassym.o
212 DEPENDFILES_OBJS= ${DEPENDOBJS:O:u:C/^/.depend./}
213 .if ${MAKE_VERSION} < 20160220
216 DEPEND_CFLAGS+= -MD ${DEPEND_MP} -MF.depend.${.TARGET}
217 DEPEND_CFLAGS+= -MT${.TARGET}
218 .if !defined(_meta_filemon)
219 .if defined(.PARSEDIR)
220 # Only add in DEPEND_CFLAGS for CFLAGS on files we expect from DEPENDOBJS
221 # as those are the only ones we will include.
222 DEPEND_CFLAGS_CONDITION= "${DEPENDOBJS:M${.TARGET}}" != ""
223 CFLAGS+= ${${DEPEND_CFLAGS_CONDITION}:?${DEPEND_CFLAGS}:}
225 CFLAGS+= ${DEPEND_CFLAGS}
227 .if !defined(_SKIP_READ_DEPEND)
228 .for __depend_obj in ${DEPENDFILES_OBJS}
229 .if ${MAKE_VERSION} < 20160220
230 .sinclude "${.OBJDIR}/${__depend_obj}"
232 .dinclude "${.OBJDIR}/${__depend_obj}"
235 .endif # !defined(_SKIP_READ_DEPEND)
236 .endif # !defined(_meta_filemon)
238 # Always run 'make depend' to generate dependencies early and to avoid the
239 # need for manually running it. For the kernel this is mostly a NOP since
240 # all dependencies are correctly added or accounted for. This is mostly to
241 # ensure downstream uses of kernel-depend are handled.
242 beforebuild: kernel-depend
244 # Guess some dependencies for when no ${DEPENDFILE}.OBJ is generated yet.
245 # For meta+filemon the .meta file is checked for since it is the dependency
247 .for __obj in ${DEPENDOBJS:O:u}
248 .if (defined(_meta_filemon) && !exists(${.OBJDIR}/${__obj}.meta)) || \
249 (!defined(_meta_filemon) && !exists(${.OBJDIR}/.depend.${__obj}))
250 .if ${SYSTEM_OBJS:M${__obj}}
251 ${__obj}: ${OBJS_DEPEND_GUESS}
253 ${__obj}: ${OBJS_DEPEND_GUESS.${__obj}}
254 .elif defined(_meta_filemon)
255 # For meta mode we still need to know which file to depend on to avoid
256 # ambiguous suffix transformation rules from .PATH. Meta mode does not
257 # use .depend files. We really only need source files, not headers since
258 # they are typically in SRCS/beforebuild already. For target-specific
259 # guesses do include headers though since they may not be in SRCS.
260 .if ${SYSTEM_OBJS:M${__obj}}
261 ${__obj}: ${OBJS_DEPEND_GUESS:N*.h}
263 ${__obj}: ${OBJS_DEPEND_GUESS.${__obj}}
267 .NOPATH: .depend ${DEPENDFILES_OBJS}
269 .depend: .PRECIOUS ${SRCS}
272 .if ${MACHINE} != ${MACHINE_CPUARCH} && ${MACHINE} != "arm64"
273 _ILINKS+= ${MACHINE_CPUARCH}
275 .if ${MACHINE_CPUARCH} == "i386" || ${MACHINE_CPUARCH} == "amd64"
279 # Ensure that the link exists without depending on it when it exists.
280 .for _link in ${_ILINKS}
281 .if !exists(${.OBJDIR}/${_link})
282 ${SRCS} ${CLEAN:M*.o}: ${_link}
287 @case ${.TARGET} in \
289 path=${S}/${MACHINE}/include ;; \
291 path=${S}/${.TARGET}/include ;; \
293 ${ECHO} ${.TARGET} "->" $$path ; \
294 ln -fhs $$path ${.TARGET}
296 # .depend needs include links so we remove them only together.
297 kernel-cleandepend: .PHONY
298 rm -f ${DEPENDFILES} ${_ILINKS}
301 @[ -f .depend ] || { echo "you must make depend first"; exit 1; }
302 sh $S/conf/systags.sh
304 kernel-install: .PHONY
305 @if [ ! -f ${KERNEL_KO} ] ; then \
306 echo "You must build a kernel first." ; \
309 .if exists(${DESTDIR}${KODIR})
310 -thiskernel=`sysctl -n kern.bootfile` ; \
311 if [ ! "`dirname "$$thiskernel"`" -ef ${DESTDIR}${KODIR} ] ; then \
312 chflags -R noschg ${DESTDIR}${KODIR} ; \
313 rm -rf ${DESTDIR}${KODIR} ; \
314 rm -rf ${DESTDIR}${KERN_DEBUGDIR}${KODIR} ; \
316 if [ -d ${DESTDIR}${KODIR}.old ] ; then \
317 chflags -R noschg ${DESTDIR}${KODIR}.old ; \
318 rm -rf ${DESTDIR}${KODIR}.old ; \
320 mv ${DESTDIR}${KODIR} ${DESTDIR}${KODIR}.old ; \
321 if [ -n "${KERN_DEBUGDIR}" -a \
322 -d ${DESTDIR}${KERN_DEBUGDIR}${KODIR} ]; then \
323 rm -rf ${DESTDIR}${KERN_DEBUGDIR}${KODIR}.old ; \
324 mv ${DESTDIR}${KERN_DEBUGDIR}${KODIR} ${DESTDIR}${KERN_DEBUGDIR}${KODIR}.old ; \
326 sysctl kern.bootfile=${DESTDIR}${KODIR}.old/"`basename "$$thiskernel"`" ; \
329 mkdir -p ${DESTDIR}${KODIR}
330 ${INSTALL} -p -m 555 -o ${KMODOWN} -g ${KMODGRP} ${KERNEL_KO} ${DESTDIR}${KODIR}/
331 .if defined(DEBUG) && !defined(INSTALL_NODEBUG) && ${MK_KERNEL_SYMBOLS} != "no"
332 mkdir -p ${DESTDIR}${KERN_DEBUGDIR}${KODIR}
333 ${INSTALL} -p -m 555 -o ${KMODOWN} -g ${KMODGRP} ${KERNEL_KO}.debug ${DESTDIR}${KERN_DEBUGDIR}${KODIR}/
335 .if defined(KERNEL_EXTRA_INSTALL)
336 ${INSTALL} -p -m 555 -o ${KMODOWN} -g ${KMODGRP} ${KERNEL_EXTRA_INSTALL} ${DESTDIR}${KODIR}/
342 @-chflags -R noschg ${DESTDIR}${KODIR}
343 ${INSTALL} -p -m 555 -o ${KMODOWN} -g ${KMODGRP} ${KERNEL_KO} ${DESTDIR}${KODIR}/
344 .if defined(DEBUG) && !defined(INSTALL_NODEBUG) && ${MK_KERNEL_SYMBOLS} != "no"
345 ${INSTALL} -p -m 555 -o ${KMODOWN} -g ${KMODGRP} ${KERNEL_KO}.debug ${DESTDIR}${KERN_DEBUGDIR}${KODIR}/
348 config.o env.o hints.o vers.o vnode_if.o:
352 config.ln env.ln hints.ln vers.ln vnode_if.ln:
355 vers.c: $S/conf/newvers.sh $S/sys/param.h ${SYSTEM_DEP}
356 MAKE=${MAKE} sh $S/conf/newvers.sh ${KERN_IDENT}
358 vnode_if.c: $S/tools/vnode_if.awk $S/kern/vnode_if.src
359 ${AWK} -f $S/tools/vnode_if.awk $S/kern/vnode_if.src -c
361 vnode_if.h vnode_if_newproto.h vnode_if_typedef.h: $S/tools/vnode_if.awk \
363 vnode_if.h: vnode_if_newproto.h vnode_if_typedef.h
364 ${AWK} -f $S/tools/vnode_if.awk $S/kern/vnode_if.src -h
366 ${AWK} -f $S/tools/vnode_if.awk $S/kern/vnode_if.src -p
368 ${AWK} -f $S/tools/vnode_if.awk $S/kern/vnode_if.src -q
370 .if ${MFS_IMAGE:Uno} != "no"
371 .if empty(MD_ROOT_SIZE_CONFIGURED)
372 # Generate an object file from the file system image to embed in the kernel
373 # via linking. Make sure the contents are in the mfs section and rename the
374 # start/end/size variables to __start_mfs, __stop_mfs, and mfs_size,
376 embedfs_${MFS_IMAGE:T:R}.o: ${MFS_IMAGE}
377 ${OBJCOPY} --input-target binary \
378 --output-target ${EMBEDFS_FORMAT.${MACHINE_ARCH}} \
379 --binary-architecture ${EMBEDFS_ARCH.${MACHINE_ARCH}} \
380 ${MFS_IMAGE} ${.TARGET}
382 --rename-section .data=mfs,contents,alloc,load,readonly,data \
384 _binary_${MFS_IMAGE:C,[^[:alnum:]],_,g}_size=__mfs_root_size \
386 _binary_${MFS_IMAGE:C,[^[:alnum:]],_,g}_start=mfs_root \
388 _binary_${MFS_IMAGE:C,[^[:alnum:]],_,g}_end=mfs_root_end \
393 # XXX strictly, everything depends on Makefile because changes to ${PROF}
394 # only appear there, but we don't handle that.